python:tests: Allocate OID range for testing to avoid collisions

sid_strings.py used the same OID range as ldap_schema.py, which
occasionally led to test failures when the same OID was generated twice.
Using a different range, and making use of the expected RID if we have
it, should reduce the likelihood of collisions.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Aug 25 13:55:47 UTC 2022 on sn-devel-184

python/samba/tests/sid_strings.py

@@ -88,11 +88,17 @@ class SidStringTests(TestCase):
 
         class_dn = f'CN={class_name},{self.schema_dn}'
 
+        governs_id = f'1.3.6.1.4.1.7165.4.6.2.9.{random_suffix}'
+        if expected_sid is not None:
+            # Append the RID to our OID to ensure more uniqueness.
+            rid = expected_sid.rsplit('-', 1)[1]
+            governs_id += f'.{rid}'
+
         ldif = f'''
 dn: {class_dn}
 objectClass: classSchema
 cn: {class_name}
-governsId: 1.3.6.1.4.1.7165.4.6.2.6.3.{random_suffix}
+governsId: {governs_id}
 subClassOf: top
 possSuperiors: domainDNS
 defaultSecurityDescriptor: O:{code}